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3 years ago

Evaluate the following expression. 5−3+2 help fast

Mathematics

1 answer:

aev [14]3 years ago

4 0

Answer:

Step-by-step explanation:

5-3=2 2+2=4

there are no parentheses so you just add/subtract from left to right..

You might be interested in

Which of the following theorems verifies that ABC~WXY?

Bumek [7]

Answer:

The correct answer is option B. AA

Step-by-step explanation:

Given two triangle:

$\triangle ABC$ and $\triangle WXY$ .

The dimensions given in $\triangle ABC$ are:

$\angle A = 27^\circ\\\angle B = 90^\circ$

We know that the sum of three angles in a triangle is equal to $180^\circ$ .

$\angle A+\angle B+\angle C = 180^\circ\\\Rightarrow 27+90+\angle C=180^\circ\\\Rightarrow \angle C = 63^\circ$

The dimensions given in $\triangle WXY$ are:

$\angle Y = 63^\circ\\\angle X = 90^\circ$

We know that the sum of three angles in a triangle is equal to $180^\circ$ .

$\angle W+\angle X+\angle Y = 180^\circ\\\Rightarrow \angle W+90+63=180^\circ\\\Rightarrow \angle W = 27^\circ$

Now, if we compare the angles of the two triangles:

$\angle A = \angle W = 27^\circ\\\angle B = \angle X= 90^\circ\\\angle C = \angle Y= 63^\circ$

So, by AA postulate (i.e. Angle - Angle) postulate, the two triangles are similar.

$\triangle ABC \sim \triangle WXY$ by AA theorem.

So, correct answer is option B. AA

7 0

3 years ago

(Adding and Subtracting Polynomials)

andrey2020 [161]

Adding and subtracting big polynomials like these are pretty easy. You just need to combine like terms. For example:

1.)

${5x}^{2} + {3x}^{2} = {8x}^{2}$

2.)

$({3x}^{2} + 5xy) + (7xy + 2) =$

${3x}^{2} + 12xy + 2$

(The 3x^2 and the 2 stay intact while the 5xy and 7xy combine together)

All you have to do is combine the numbers that have the same powers of x and y with each other. x^2 will combine with x^2 and xy^2 wil combine with xy^2 exc. If there is no other number with the same x and y's, then you just leave it as it is in the answer.

Now with the original question, I see a -9xy^3, and thats gonna combine with the 3xy^3 in the second polynomial and the 2xy^3 in the third one.

$- 9x {y}^{3} + 3x {y}^{3} + 2x {y}^{3} = \\ - 4x {y}^{3}$

So far we have -4xy^3, the next term is going to be a -9x^4y^3, and that's gonna combine with the 3x^4y^3 in the third one.

$- 9 {x}^{4} {y}^{3} + 3 {x}^{4} {y}^{3} = - 6{x}^{4} {y}^{3}$

We now finished adding the like terms that were in the first polynomial, we will move onto the second polynomial. The first term in this one is 3xy^3, in which we already added in the first step. At this point, it doesn't look like there are any other terms that have the same x and y behind them. So we can move on and write the final answer:

$- 4x {y}^{3} - 6 {x}^{4} {y}^{3} + 7 {y}^{4} \\ - 8 {x}^{4} {y}^{4}$

(All on the same line of course)

Also, for your second question, the order does not matter in which you write the terms. I could write the 7y^4 behind the -8x^4y^4 and it would still be the same answer.

If you have any other questions let me know :) while I double check my work.

6 0

4 years ago

What is the difference between a composite number and a prime number?

GenaCL600 [577]

Answer:

Step-by-step explanation:

Prime numbers are numbers that are divisible by itself and '1'. This means prime numbers are numbers with just two factors while composite numbers are numbers that are divisible by more than two numbers, that is they have more than 2 factors.

Example of prime numbers are 5,7,11 etc. We see that these numbers are only divisible by themselves and by '1' while examples of composite numbers are 10, 15, 20, etc. We clearly see that these numbers have more than 2factors.

4 0

3 years ago

Consider the infinite region bounded by the curves y=1/x, x=1, and the x-axis. Show that the solid obtained by rotating this reg

solmaris [256]

Can you j the question more sorry i just cant find the comment so i used this.

5 0

3 years ago

Which algebraic expression is a trinomial?

tangare [24]

Answer:

D. x^6 - x + √6

Step-by-step explanation:

Last option:

⇒ x^6 - x + √6

Cannot be simplified further and has three terms.

Therefore is a trinomial.

7 0

2 years ago